Aortic 18F-fluorodeoxyglucose (FDG) uptake from PET/CT scans could flag sustained inflammation in patients with surgically repaired coarctation of aorta late during adult life, in the absence of risk factors for coronary artery disease. Increased 18F-FDG uptake in the aorta can be a novel biomarker predictive of aortopathy or hypertension development at a later stage in these subjects.